Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, and the sixth lens is made of glass material. The camera optical lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPL1CATIONS

This application claims the priority benefit of Chinese PatentApplications Ser. No. 201711366218.9 and Ser. No. 201711367726.9 filedon Dec. 18, 2017, the entire content of which is incorporated herein byreference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordancewith a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lensshown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown inFIG. 9;

FIG. 12 presents the field curvature and distortion of the cameraoptical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 6 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixthlens L6. Optical element like optical filter GF can be arranged betweenthe sixth lens L6 and the image surface Si. The first lens L1 is made ofplastic material, the second lens L2 is made of plastic material, thethird lens L3 is made of plastic material, the fourth lens L4 is made ofplastic material, the fifth lens L5 is made of plastic material, and thesixth lens L6 is made of glass material.

Here, the focal length of the whole camera optical lens 10 is defined asf, the focal length of the first lens is defined as f1. The cameraoptical lens 10 further satisfies the following condition: −3≤f1/f≤−2.Condition −3≤f1/f≤−2 fixes the negative refractive power of the firstlens L1. If the upper limit of the set value is exceeded, although itbenefits the ultra-thin development of lenses, but the negativerefractive power of the first lens L1 will be too strong, problem likeaberration is difficult to be corrected, and it is also unfavorable forwide-angle development of lens. On the contrary, if the lower limit ofthe set value is exceeded, the negative refractive power of the firstlens L1 becomes too weak, it is then difficult to develop ultra-thinlenses. Preferably, the following condition shall be satisfied,−2.99≤f1/f≤−2.

The refractive power of the sixth lens L6 is defined as n6. Here thefollowing condition should satisfied: 1.7≤n6≤2.2. This condition fixesthe refractive power of the sixth lens L6, and refractive power withinthis range benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.71≤n6≤2.04.

The thickness on-axis of the sixth lens L6 is defined as d11, and thetotal optical length of the camera optical lens 10 is defined as TTL.The following condition: 0.045≤d11/TTL≤0.055 should be satisfied. Thiscondition fixes the ratio between the thickness on-axis of the sixthlens L6 and the total optical length TTL. When the condition issatisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.046≤d11/TTL≤0.054 shall be satisfied.

In this embodiment, the first lens L1 has a negative refractive powerwith a convex object side surface relative to the proximal axis and aconcave image side surface relative to the proximal axis.

The curvature radius of the object side surface of the first lens L1 isdefined as R1, the curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies the following condition: 2.03≤(R1+R2)/(R1−R2)≤9.63, whichfixes the shape of the first lens L1. When the value is beyond thisrange, with the development into the direction of ultra-thin andwide-angle lenses, problem like aberration of the off-axis picture angleis difficult to be corrected. Preferably, the condition3.25≤(R1+R2)/(R1−R2)≤7.70 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. Thefollowing condition: 0.12≤d1≤0.35 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.18≤d1≤0.28 shall besatisfied.

In this embodiment, the second lens L2 has a positive refractive powerwith a convex object side surface and a convex image side surfacerelative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the second lens L2 is f2. The following condition should besatisfied: 0.35≤f2/f≤1.11. When the condition is satisfied, the positiverefractive power of the second lens L2 is controlled within reasonablescope, the spherical aberration caused by the first lens L1 which hasnegative refractive power and the field curvature of the system then canbe reasonably and effectively balanced. Preferably, the condition0.56≤f2/f≤0.89 should be satisfied.

The curvature radius of the object side surface of the second lens L2 isdefined as R3, the curvature radius of the image side surface of thesecond lens L2 is defined as R4. The following condition should besatisfied: −1.54≤(R3+R4)/(R3−R4)≤−0.41, which fixes the shape of thesecond lens L2 and can effectively correct aberration of the cameraoptical lens. Preferably, the following condition shall be satisfied,−0.96≤(R3+R4)/(R3−R4)≤−0.51.

The thickness on-axis of the second lens L2 is defined as d3. Thefollowing condition: 0.31≤d3≤1.05 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.5≤d3≤0.84 shall besatisfied.

In this embodiment, the third lens L3 has a negative refractive powerwith a convex object side surface relative to the proximal axis and aconcave image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the third lens L3 is f3. The following condition should besatisfied: −28.77≤f3/f≤−2.36, by which the field curvature of the systemthen can be reasonably and effectively balanced. Preferably, thecondition −17.98≤f3/f≤−2.95 should be satisfied.

The curvature radius of the object side surface of the third lens L3 isdefined as R5, the curvature radius of the image side surface of thethird lens L3 is defined as R6. The following condition should besatisfied: 0.78≤(R5+R6)/(R5−R6)≤28.51, by which, with the developmentinto the direction of ultra-thin and wide-angle lenses, problem likeaberration of the off-axis picture angle is difficult to be corrected.Preferably, the following condition shall be satisfied,1.25≤(R5+R6)/(R5−R6)≤22.81.

The thickness on-axis of the third lens L3 is defined as d5. Thefollowing condition: 0.11≤d5≤0.38 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.18≤d5≤0.30 shall besatisfied.

In this embodiment, the fourth lens L4 has a positive refractive powerwith a concave object side surface and a convex image side surfacerelative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the fourth lens L4 is f4. The following condition should besatisfied: 0.62≤f4/f≤2.02, which can effectively reduce the sensitivityof lens group used in camera and further enhance the imaging quality.Preferably, the condition 1.00≤f4/f≤1.61 should be satisfied.

The curvature radius of the object side surface of the fourth lens L4 isdefined as R7, the curvature radius of the image side surface of thefourth lens L4 is defined as R8. The following condition should besatisfied: 1.81≤(R7+R8)/(R7−R8)≤5.90, by which, with the developmentinto the direction of ultra-thin and wide-angle lenses, problem likeaberration of the off-axis picture angle is difficult to be corrected.Preferably, the following condition shall be satisfied,2.90≤(R7+R8)/(R7−R8)≤4.72.

The thickness on-axis of the fourth lens L4 is defined as d7. Thefollowing condition: 0.34≤d7≤1.34 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.54≤d7≤1.08 shall besatisfied.

In this embodiment, the fifth lens L5 has a positive refractive powerwith a convex object side surface and a convex image side surfacerelative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the fifth lens L5 is f5. The following condition should besatisfied: 0.77≤f5/f≤2.40, which can effectively smooth the light anglesof the camera and reduce the tolerance sensitivity. Preferably, thecondition 1.23≤f5/f≤1.92 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 isdefined as R9, the curvature radius of the image side surface of thefifth lens L5 is defined as R10. The following condition should besatisfied: −0.59≤(R9+R10)/(R9−R10)≤0.16, by which, the shape of thefifth lens L5 is fixed, further, with the development into the directionof ultra-thin and wide-angle lenses, problem like aberration of theoff-axis picture angle is difficult to be corrected. Preferably, thefollowing condition shall be satisfied, −0.37≤(R9+R10)/(R9−R10)≤0.13.

The thickness on-axis of the fifth lens L5 is defined as d9. Thefollowing condition: 0.30≤d9≤0.95 should be satisfied. When thecondition is lo satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.48≤d9≤0.76 shall besatisfied.

In this embodiment, the sixth lens L6 has a negative refractive powerwith a concave object side surface and a concave image side surfacerelative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focallength of the sixth lens L6 is f6. The following condition should besatisfied: −0.98≤f6/f≤−0.29, which can effectively reduce thesensitivity of lens group used in camera and further enhance the imagingquality. Preferably, the condition −0.61≤f6/f≤−0.36 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 isdefined as R11, the curvature radius of the image side surface of thesixth lens L6 is defined as R12. The following condition should besatisfied: −1.10≤(R11+R12)/(R11−R12)≤−0.20, by which, the shape of thesixth lens L6 is fixed , further, with the development into thedirection of ultra-thin and wide-angle lenses, problem like aberrationof the off-axis picture angle is difficult to be corrected. Preferably,the following condition shall be satisfied,−0.69≤(R11+R12)/(R11−R12)≤−0.25.

The thickness on-axis of the sixth lens L6 is defined as d11. Thefollowing condition: 0.11≤d11≤0.40 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.18≤d11≤0.32 shall besatisfied.

The focal length of the whole camera optical lens 10 is f, the combinedfocal length of the first lens L1 and the second lens L2 is f12. Thefollowing condition should be satisfied: 0.49≤f12/f≤1.65, which caneffectively avoid the aberration and field curvature of the cameraoptical lens, and can suppress the rear focal length for realizing theultra-thin lens. Preferably, the condition 0.79≤f12/f≤1.32 should besatisfied.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.62 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 5.37 mm.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 2.16. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.12.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceof the first lens L1 to the image surface).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd νd S1 ∞ d0= −0.030 R1 2.4209 d1= 0.230 nd1 1.6713 ν119.24 R2 1.7681 d2= 0.030 R3 1.6542 d3= 0.620 nd2 1.5445 ν2 55.99 R4−12.7351 d4= 0.459 R5 31.9978 d5= 0.253 nd3 1.6713 ν3 19.24 R6 7.0603d6= 0.360 R7 −2.4306 d7= 0.783 nd4 1.5449 ν4 55.93 R8 −1.4457 d8= 0.030R9 4.8108 d9= 0.610 nd5 1.5352 ν5 56.09 R10 −8.8116 d10= 0.482 R11−2.0790 d11= 0.230 nd6 1.7130 ν6 53.87 R12 3.8465 d12= 0.159 R13 ∞ d13=0.210 ndg 1.5168 νg 64.17 R14 ∞ d14= 0.500

Where:

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the opticalfilter GF;

R14: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the optical filter GF;

d13: The thickness on-axis of the optical filter GF;

d14: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −5.0255E+00 −6.2596E−02 8.1890E−03 −3.8409E−02 −8.9454E−02 2.5436E−01 −2.4852E−01  9.0884E−02 R2 −1.0956E+01  1.6244E−032.9087E−02 −2.7003E−01  3.9058E−01 −3.3583E−01 1.5429E−01 −2.2866E−02 R3 −9.8005E+00  1.2131E−01 3.6869E−02 −1.3279E−01  1.5630E−01−6.8661E−02 −3.1395E−03  8.7605E−03 R4  3.8151E+00 −3.7396E−021.5911E−02  1.0218E−01 −1.8623E−01  3.0040E−01 −2.6865E−01  8.4285E−02R5 −8.6384E+01 −2.2323E−01 −1.1426E−02   7.3059E−02 −1.7271E−02−1.6325E−03 2.6393E−02 −3.5110E−02  R6 −3.2915E+01 −1.4290E−013.9595E−03  2.1907E−02  9.2609E−03  4.7987E−03 −3.7479E−03  −8.9083E−04 R7  2.9380E+00  7.6661E−02 −6.2958E−02   5.5223E−03  1.4833E−03−3.0817E−03 8.1608E−04 5.6767E−03 R8 −2.6056E+00 −7.0316E−02 1.5849E−02−6.3686E−03 −1.5734E−03 −5.6951E−04 2.5996E−05 3.1745E−04 R9  4.4619E−01−6.7119E−02 1.3174E−02 −4.1255E−03 −6.4853E−04  2.6137E−04 8.7769E−05−2.7494E−05  R10  2.0188E+01 −1.4806E−02 −1.2624E−02   7.8268E−04 3.1974E−04  3.3854E−05 6.9262E−06 2.0659E−06 R11 −7.6641E+00−7.5500E−02 5.2465E−03  1.2425E−03 −3.9299E−05 −1.4981E−05 −1.6286E−06 1.3137E−06 R12 −1.3332E+01 −5.0876E−02 1.2686E−02 −1.7111E−03 2.6354E−05  8.5337E−06 5.2196E−07 −1.2338E−07 

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2) ]+A4x ⁴ +A6x⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶   (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, P1R1 and P1R2 represent respectively theobject side surface and image side surface of the first lens L1, P2R1and P2R2 represent respectively the object side surface and image sidesurface of the second lens L2, P3R1 and P3R2 represent respectively theobject side surface and image side surface of the third lens L3, P4R1and P4R2 represent respectively the object side surface and image sidesurface of the fourth lens L4, P5R1 and P5R2 represent respectively theobject side surface and image side surface of the fifth lens L5, P6R1and P6R2 represent respectively the object side surface and image sidesurface of the sixth lens L6. The data in the column named “inflexionpoint position” are the vertical distances from the inflexion pointsarranged on each lens surface to the optic axis of the camera opticallens 10. The data in the column named “arrest point position” are thevertical distances from the arrest points arranged on each lens surfaceto the optic axis of the camera optical lens 10.

TABLE 3 Inflexion Inflexion Inflexion point number point position 1point position 2 P1R1 1 0.575 P1R2 1 0.595 P2R1 0 P2R2 2 0.645 0.985P3R1 1 0.115 P3R2 2 0.285 0.955 P4R1 0 P4R2 1 1.355 P5R1 1 0.555 P5R2 11.655 P6R1 1 1.695 P6R2 1 0.605

TABLE 4 Arrest point number Arrest point position 1 P1R1 1 0.925 P1R2 10.965 P2R1 0 P2R2 1 0.905 P3R1 1 0.185 P3R2 1 0.485 P4R1 0 P4R2 0 P5R1 10.975 P5R2 0 P6R1 0 P6R2 1 1.205

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 13 shows the various values of the embodiments 1, 2, 3, and thevalues corresponding with the parameters which are already specified inthe conditions.

As shown in Table 13, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.805 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 76.35°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd νd S1 ∞ d0= −0.010 R1 2.7623 d1= 0.230 nd1 1.6713 ν119.24 R2 1.7384 d2= 0.030 R3 1.6089 d3= 0.672 nd2 1.5445 ν2 55.99 R4−11.8430 d4= 0.366 R5 2.7105 d5= 0.229 nd3 1.6713 ν3 19.24 R6 2.4396 d6=0.575 R7 −2.4344 d7= 0.680 nd4 1.5449 ν4 55.93 R8 −1.3805 d8= 0.030 R97.1982 d9= 0.604 nd5 1.5352 ν5 56.09 R10 −5.7864 d10= 0.430 R11 −1.7740d11= 0.265 nd6 1.8160 ν6 46.62 R12 6.1108 d12= 0.102 R13 ∞ d13= 0.210ndg 1.5168 νg 64.17 R14 ∞ d14= 0.500

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −1.9655E+01 −3.4530E−02 1.3568E−02 −1.5749E−01 7.7478E−02  2.9037E−01−4.3862E−01  1.8406E−01 R2 −1.8785E+01  5.8762E−04 2.3980E−02−2.5835E−01 4.1975E−01 −3.2296E−01 8.5695E−02 1.2770E−02 R3 −1.4887E+01 1.1226E−01 5.6157E−02 −1.4444E−01 1.4894E−01 −6.6728E−02 −1.6609E−03 8.1766E−03 R4  2.3635E+01 −7.2930E−02 6.2546E−02  6.3136E−02−1.9185E−01   3.0402E−01 −2.5251E−01  7.6887E−02 R5  3.9704E+00−2.6329E−01 −1.0223E−02   5.0423E−02 −1.1935E−02  −1.0964E−02 7.8042E−03−1.4738E−02  R6 −3.3554E+00 −1.5220E−01 −1.5466E−02   4.6049E−028.1520E−03 −9.5198E−03 −1.2323E−02  7.7402E−03 R7  2.6500E+00 2.3538E−02 −3.9761E−02  −4.0487E−03 −1.9610E−02  −1.8564E−03 1.0267E−023.9338E−03 R8 −2.5904E+00 −9.2304E−02 1.2504E−02 −1.1838E−02−1.2292E−03  −1.2118E−03 4.5944E−05 9.4304E−04 R9  1.6177E+01−6.8142E−02 −2.3199E−03  −1.3419E−03 1.7026E−04  3.9101E−04 3.7361E−05−5.9200E−05  R10  8.5670E+00 −1.2920E−02 −1.7151E−02   1.6157E−034.1002E−04 −3.5864E−05 −1.5799E−05  1.8363E−05 R11 −5.2821E+00−5.5391E−02 1.8995E−03  5.0627E−04 −2.5397E−04  −1.7861E−05 5.6041E−066.9935E−06 R12  4.5671E+00 −5.3073E−02 1.0469E−02 −1.6594E−03 4.3103E−05 9.4227E−06 3.8864E−07 −1.6250E−07 

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in embodiment 2 of thepresent invention.

TABLE 7 Inflexion Inflexion Inflexion point number point position 1point position 2 P1R1 1 0.515 P1R2 1 0.565 P2R1 0 P2R2 2 0.725 0.945P3R1 1 0.375 P3R2 2 0.455 1.085 P4R1 1 1.105 P4R2 1 1.265 P5R1 1 0.435P5R2 1 1.605 P6R1 1 1.675 P6R2 1 0.575

TABLE 8 Arrest point Arrest point Arrest point number position 1position 2 P1R1 1 0.865 P1R2 0 P2R1 0 P2R2 0 P3R1 1 0.655 P3R2 2 0.8551.175 P4R1 0 P4R2 0 P5R1 1 0.735 P5R2 0 P6R1 0 P6R2 1 1.075

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 13, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.811 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 76.26°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 9 and table 10 show the design data of the camera optical lens 30in embodiment 3 of the present invention.

TABLE 9 R d nd νd S1 ∞ d0= 0.030 R1 3.8837 d1= 0.230 nd1 1.6713 ν1 19.24R2 2.3493 d2= 0.030 R3 1.8204 d3= 0.700 nd2 1.5445 ν2 55.99 R4 −7.6162d4= 0.285 R5 3.2539 d5= 0.245 nd3 1.6713 ν3 19.24 R6 2.7093 d6= 0.538 R7−2.3903 d7= 0.896 nd4 1.5449 ν4 55.93 R8 −1.3960 d8= 0.030 R9 6.4760 d9=0.634 nd5 1.5352 ν5 56.09 R10 −5.6612 d10= 0.480 R11 −1.9594 d11= 0.255nd6 1.8830 ν6 40.77 R12 5.4389 d12= 0.080 R13 ∞ d13= 0.210 ndg 1.5168 νg64.17 R14 ∞ d14= 0.500

Table 10 shows the aspherical surface data of each lens of the cameraoptical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −2.4007E+01 −9.7229E−02 4.7065E−02 −9.0820E−02 −1.8226E−02 2.6077E−01 −3.3977E−01 1.4530E−01 R2 −4.0012E+01 −5.1409E−02 6.2098E−02−2.3925E−01  3.9334E−01 −3.4750E−01  1.1916E−01 4.1485E−03 R3−2.1222E+01  1.1543E−01 4.6350E−02 −1.3648E−01  1.4802E−01 −7.0228E−02−9.3861E−04 8.3797E−03 R4  1.8844E+01 −7.4829E−02 6.5584E−02  5.7895E−02−1.9409E−01  3.0976E−01 −2.5256E−01 7.4787E−02 R5  3.3111E−01−2.5399E−01 −5.0766E−04   7.4839E−02 −1.8741E−02 −2.9076E−02  2.5796E−02−1.3586E−02  R6 −6.0954E+00 −1.4492E−01 −1.1408E−02   3.5576E−02 7.9175E−03 −8.5107E−03 −1.0262E−02 7.7892E−03 R7  2.5002E+00 1.4155E−02 −3.0816E−02   1.9079E−03 −1.9419E−02 −6.7632E−03  8.3724E−036.6601E−03 R8 −2.4832E+00 −8.7160E−02 1.4609E−02 −7.6971E−03 −5.1836E−05−1.0511E−03 −2.8592E−05 4.5588E−04 R9  1.1845E+01 −4.9638E−02 1.3629E−03−2.2011E−03 −2.2258E−04  2.7859E−04  7.3994E−05 −3.8877E−05  R10 6.3254E+00  8.9323E−03 −1.5997E−02   1.2261E−03  2.2396E−04  1.2588E−06−4.3116E−06 4.6685E−06 R11 −6.2449E+00 −4.7995E−02 1.9862E−03 4.8478E−04 −2.2348E−04 −3.0331E−05  1.9351E−06 4.4082E−06 R12 3.1739E+00 −5.4785E−02 1.0727E−02 −1.6178E−03  4.5346E−05  8.1035E−06 2.9151E−07 −1.2368E−07 

Table 11 and table 12 show the inflexion points and the arrest pointdesign data of the camera optical lens 30 lens in embodiment 3 of thepresent invention.

TABLE 11 Inflexion Inflexion Inflexion point number point position 1point position 2 P1R1 1 0.415 P1R2 1 0.455 P2R1 0 P2R2 1 1.115 P3R1 10.325 P3R2 2 0.425 1.045 P4R1 1 1.095 P4R2 1 1.325 P5R1 1 0.555 P5R2 11.705 P6R1 1 1.785 P6R2 1 0.605

TABLE 12 Arrest point Arrest point Arrest point number position 1position 2 P1R1 1 0.725 P1R2 1 0.835 P2R1 0 P2R2 0 P3R1 1 0.575 P3R2 20.775 1.155 P4R1 0 P4R2 0 P5R1 1 0.945 P5R2 0 P6R1 0 P6R2 1 1.145

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 30 in the third embodiment. FIG.12 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 30 inthe third embodiment.

As shown in Table 13, the third embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.779 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 77.06°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 13 Embodiment 1 Embodiment 2 Embodiment 3 f 3.791 3.803 3.736 f1−11.285 −7.613 −9.342 f2 2.721 2.640 2.762 f3 −13.426 −54.696 −29.191 f45.094 4.750 4.656 f5 5.888 6.073 5.730 f6 −1.856 −1.653 −1.598 f12 3.7424.186 3.984 (R1 + R2)/ 6.418 4.396 4.062 (R1 − R2) (R3 + R4)/ −0.770−0.761 −0.614 (R3 − R4) (R5 + R6)/ 1.566 19.006 10.949 (R5 − R6) (R7 +R8)/ 3.935 3.620 3.808 (R7 − R8) (R9 + R10)/ −0.294 0.109 0.067 (R9 −R10) (R11 + R12)/ −0.298 −0.550 −0.470 (R11 − R12) f1/f −2.977 −2.002−2.500 f2/f 0.718 0.694 0.739 f3/f −3.542 −14.384 −7.813 f4/f 1.3441.249 1.246 f5/f 1.553 1.597 1.534 f6/f −0.490 −0.435 −0.428 f12/f 0.9871.101 1.066 d1 0.230 0.230 0.230 d3 0.620 0.672 0.700 d5 0.253 0.2290.245 d7 0.783 0.680 0.896 d9 0.610 0.604 0.634 d11 0.230 0.265 0.255Fno 2.100 2.100 2.100 TTL 4.957 4.923 5.113 d1/TTL 0.046 0.047 0.045d3/TTL 0.125 0.137 0.137 d5/TTL 0.051 0.047 0.048 d7/TTL 0.158 0.1380.175 d9/TTL 0.123 0.123 0.124 d11/TTL 0.046 0.054 0.050 n1 1.67131.6713 1.6713 n2 1.5445 1.5445 1.5445 n3 1.6713 1.6713 1.6713 n4 1.54491.5449 1.5449 n5 1.5352 1.5352 1.5352 n6 1.7130 1.8160 1.8830 v1 19.242919.2429 19.2429 v2 55.9870 55.9870 55.9870 v3 19.2429 19.2429 19.2429 v455.9299 55.9299 55.9299 v5 56.0934 56.0934 56.0934 v6 53.8671 46.620640.7651

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens having apositive refractive power and having a convex object side surface and aconvex image side surface, a third lens having a negative refractivepower, a fourth lens, a fifth lens, and a sixth lens; wherein the cameraoptical lens further satisfies the following conditions:−3≤f1/f≤−2;1.7≤n6≤2.2;0.045≤d11/TTL≤0.055;−28.77≤f3/f≤−7.813;0.35≤f2/f≤1.11;−1.54≤(R3+R4)/(R3−R4)≤−0.41;0.31 mm≤d3≤1.05 mm; where f: the focal length of the camera opticallens; f1: the focal length of the first lens; f2: the focal length ofthe second lens; f3: the focal length of the third lens; n6: therefractive index of the sixth lens; R3: the curvature radius of theobject side surface of the second lens; R4: the curvature radius of theimage side surface of the second lens; d3: the thickness on-axis of thesecond lens; d11: the thickness on-axis of the sixth lens; TTL: thetotal optical length of the camera optical lens.
 2. The camera opticallens as described in claim 1, wherein the first lens is made of plasticmaterial, the second lens is made of plastic material, the third lens ismade of plastic material, the fourth lens is made of plastic material,the fifth lens is made of plastic material, the sixth lens is made ofglass material.
 3. The camera optical lens as described in claim 1further satisfying the following conditions:−2.99≤f1/f≤−2;1.71≤n6≤2.04;0.046≤d11/TTL≤0.054.
 4. The camera optical lens as described in claim 1,wherein first lens has a negative refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:2.03≤(R1+R2)/(R1−R2)≤9.63;0.12 mm≤d1≤0.35 mm; where R1: the curvature radius of object sidesurface of the first lens; R2: the curvature radius of image sidesurface of the first lens; d1: the thickness on-axis of the first lens.5. The camera optical lens as described in claim 4 further satisfyingthe following conditions:3.25≤(R1+R2)/(R1−R2)≤7.70;0.18 mm≤d1≤0.28 mm.
 6. The camera optical lens as described in claim 1further satisfying the following conditions:0.56≤f2/f≤0.89;0.96≤(R3+R4)/(R3−R4)≤−0.51;0.5 mm≤d3≤0.84 mm.
 7. The camera optical lens as described in claim 1,wherein the third lens has a convex object side surface and a concaveimage object side surface; the camera optical lens further satisfies thefollowing conditions:0.78≤(R5+R6)/(R5−R6)≤28.51;0.11 mm≤d5≤0.38 mm; where R5: the curvature radius of the object sidesurface of the third lens; R6: the curvature radius of the image sidesurface of the third lens; d5: the thickness on-axis of the third lens.8. The camera optical lens as described in claim 7 further satisfyingthe following conditions:1.25≤(R5+R6)/(R5−R6)≤22.81;0.18 mm≤d5≤0.30 mm.
 9. The camera optical lens as described in claim 1,wherein the fourth lens has a positive refractive power with a concaveobject side surface and a convex image side surface; the camera opticallens further satisfies the following conditions:0.62≤f4/f≤2.02;1.81≤(R7+R8)/(R7−R8)≤5.90;0.34 mm≤d7≤1.34 mm; where f: the focal length of the camera opticallens; f4: the focal length of the fourth lens; R7: the curvature radiusof the object side surface of the fourth lens; R8: the curvature radiusof the image side surface of the fourth lens; d7: the thickness on-axisof the fourth lens.
 10. The camera optical lens as described in claim 9further satisfying the following conditions:1.00≤f4/f≤1.61;2.90≤(R7+R8)/(R7−R8)≤4.72;0.54 mm≤d7≤1.08 mm.
 11. The camera optical lens as described in claim 1,wherein the fifth lens has a positive refractive power with a convexobject side surface and a convex image side surface; the camera opticallens further satisfies the following conditions:0.77≤f5/f≤2.40;−0.59≤(R9+R10)/(R9−R10)≤0.16;0.30 mm≤d9≤0.95 mm; where f: the focal length of the camera opticallens; f5: the focal length of the fifth lens; R9: the curvature radiusof the object side surface of the fifth lens; R10: the curvature radiusof the image side surface of the fifth lens; d9: the thickness on-axisof the fifth lens.
 12. The camera optical lens as described in claim 11further satisfying the following conditions:1.23≤f5/f≤1.92;−0.37≤(R9+R10)/(R9−R10)≤0.13;0.48 mm≤d9≤0.76 mm.
 13. The camera optical lens as described in claim 1,wherein the sixth lens has a negative refractive power with a concaveobject side surface and a concave image side surface; the camera opticallens further satisfies the following conditions:−0.98≤f6/f≤−0.29;−1.10(R11+R12)/(R11−R12)≤−0.20;0.11 mm≤d11≤0.40 mm; where f: the focal length of the camera opticallens; f6: the focal length of the sixth lens; R11: the curvature radiusof the object side surface of the sixth lens; R12: the curvature radiusof the image side surface of the sixth lens; d11: the thickness on-axisof the sixth lens.
 14. The camera optical lens as described in claim 13further satisfying the following conditions:−0.61≤f6/f≤−0.36;−0.69≤(R11+R12)/(R11−R12)≤−0.25;0.18 mm≤d11≤−0.32 mm.
 15. The camera optical lens as described in claim1 further satisfying the following condition:0.49≤f12/f≤1.65; where f12: the combined focal length of the first lensand the second lens; f: the focal length of the camera optical lens. 16.The camera optical lens as described in claim 15 further satisfying thefollowing condition:0.79≤f12/f≤1.32.
 17. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 5.62 mm.
 18. The camera optical lens as described inclaim 17, wherein the total optical length TTL of the camera opticallens is less than or equal to 5.37 mm.
 19. The camera optical lens asdescribed in claim 1, wherein the aperture F number of the cameraoptical lens is less than or equal to 2.16.
 20. The camera optical lensas described in claim 19, wherein the aperture F number of the cameraoptical lens is less than or equal to 2.12.